@@ -1647,16 +1647,20 @@ mark_frame_related (rtx insn)
static void
add_pop_cfi_notes (rtx_insn *insn, unsigned int high, unsigned int low)
{
- rtx t = plus_constant (Pmode, stack_pointer_rtx,
- (high - low + 1) * UNITS_PER_WORD);
+ rtx src = stack_pointer_rtx;
+ rtx t;
+ for (unsigned int i = low; i <= high; i++)
+ {
+ add_reg_note (insn, REG_CFA_RESTORE, gen_rtx_REG (word_mode, i));
+ if (i == FRAME_POINTER_REGNUM)
+ src = frame_pointer_rtx;
+ }
+ t = plus_constant (Pmode, src, (high - low + 1) * UNITS_PER_WORD);
t = gen_rtx_SET (stack_pointer_rtx, t);
add_reg_note (insn, REG_CFA_ADJUST_CFA, t);
RTX_FRAME_RELATED_P (insn) = 1;
- for (unsigned int i = low; i <= high; i++)
- add_reg_note (insn, REG_CFA_RESTORE, gen_rtx_REG (word_mode, i));
}
-
static bool
ok_for_max_constant (HOST_WIDE_INT val)
{
@@ -1815,37 +1819,17 @@ rx_expand_prologue (void)
}
}
- /* If needed, set up the frame pointer. */
- if (frame_pointer_needed)
- gen_safe_add (frame_pointer_rtx, stack_pointer_rtx,
- GEN_INT (- (HOST_WIDE_INT) frame_size), true);
-
- /* Allocate space for the outgoing args.
- If the stack frame has not already been set up then handle this as well. */
- if (stack_size)
+ if (stack_size || frame_size)
{
- if (frame_size)
- {
- if (frame_pointer_needed)
- gen_safe_add (stack_pointer_rtx, frame_pointer_rtx,
- GEN_INT (- (HOST_WIDE_INT) stack_size), true);
- else
- gen_safe_add (stack_pointer_rtx, stack_pointer_rtx,
- GEN_INT (- (HOST_WIDE_INT) (frame_size + stack_size)),
- true);
- }
- else
- gen_safe_add (stack_pointer_rtx, stack_pointer_rtx,
- GEN_INT (- (HOST_WIDE_INT) stack_size), true);
+ gen_safe_add (stack_pointer_rtx, stack_pointer_rtx,
+ GEN_INT (- (HOST_WIDE_INT) (stack_size + frame_size)),
+ true);
}
- else if (frame_size)
+ if (frame_pointer_needed)
{
- if (! frame_pointer_needed)
- gen_safe_add (stack_pointer_rtx, stack_pointer_rtx,
- GEN_INT (- (HOST_WIDE_INT) frame_size), true);
- else
- gen_safe_add (stack_pointer_rtx, frame_pointer_rtx, NULL_RTX,
- false /* False because the epilogue will use the FP not the SP. */);
+ gen_safe_add (frame_pointer_rtx, stack_pointer_rtx,
+ GEN_INT ((HOST_WIDE_INT) stack_size),
+ true);
}
}
The problem was caused by an erroneous note about creating a stack frame, which caused the cur_cfa reg to fail to assert with a value other than the frame pointer. This fix will generate notes that correctly update cur_cfa. gcc/config/rx/ * rx.cc (add_pop_cfi_notes): Release the frame pointer if it is used. (rx_expand_prologue): Redesigned stack pointer and frame pointer update process. Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp> --- gcc/config/rx/rx.cc | 50 +++++++++++++++------------------------------ 1 file changed, 17 insertions(+), 33 deletions(-)